28428975

素因数分解:

$3^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:262

約数の個数: 60

約数和(自身を含む): 53564280

約数和(自身を除く): 25135305

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 101, 135, 139, 225, 303, 405, 417, 505, 675, 695, 909, 1251, 1515, 2025, 2085, 2525, 2727, 3475, 3753, 4545, 6255, 7575, 8181, 10425, 11259, 13635, 14039, 18765, 22725, 31275, 40905, 42117, 56295, 68175, 70195, 93825, 126351, 204525, 210585, 281475, 350975, 379053, 631755, 1052925, 1137159, 1895265, 3158775, 5685795, 9476325, 28428975]

約数ペア:

[(1, 28428975), (3, 9476325), (5, 5685795), (9, 3158775), (15, 1895265), (25, 1137159), (27, 1052925), (45, 631755), (75, 379053), (81, 350975), (101, 281475), (135, 210585), (139, 204525), (225, 126351), (303, 93825), (405, 70195), (417, 68175), (505, 56295), (675, 42117), (695, 40905), (909, 31275), (1251, 22725), (1515, 18765), (2025, 14039), (2085, 13635), (2525, 11259), (2727, 10425), (3475, 8181), (3753, 7575), (4545, 6255)]